The Asopinae predators of Eucalyptus spp.(Myrtaceae) pests in Brazil include Brontocoris tabidus, Podisus distinctus, Podisus nigrispinus, and Supputius cincticeps (Heteroptera: Pentatomidae). These insects feed on the larvae and pupae of Coleoptera and Lepidoptera defoliators. Asopinae predators are reared in the laboratory in wooden cages with wood screens on the upper and lateral sides and the front closed with a glass door, whereas, in the field they are raised in organza bags with branches of Eucalyptus spp. or Psidium guajava (Myrtaceae). An alternative prey, such as Tenebrio molitor (Coleoptera: Tenebrionidae) pupae and Musca domestica (Diptera: Muscidae), or Bombyx mori (Lepidoptera: Bombycidae) larvae, or the natural prey